criu: Version 1.3-rc2

Next acheivement -- external bind mounts and tasks-to-cgroups
bindings. Plus many bugfixes in memory restore and mounpoints
dump, many thanks to Google guys for reports and patches!

We have quite a few things left to make workable LXC and Docker
support, hopefully the next tag will be the 1.3 one :)

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>